ssq001
diff --git a/‎poetry.lock
+60-10 b/‎poetry.lock
+60-10
diff --git a/‎pyproject.toml
+1 b/‎pyproject.toml
+1
@@ -34,6 +34,7 @@ stack_data = "^0.0.7"
 production = ["gevent", "gunicorn", "psycopg2"]
 
 [tool.poetry.dev-dependencies]
+flake8 = {version = "^3.8.3", optional = true}
 
 [build-system]
 requires = ["poetry>=0.12"]